[PATCH 11/12] fs: don't reassign dirty inodes to default_backing_dev_info

[Christoph Hellwig]

On Mon, Mar 23, 2015 at 06:40:13PM -0400, Mike Snitzer wrote:
> FYI, here is the DM fix I've staged for 4.0-rc6.  I'll continue testing
> the various DM targets before requesting Linus to pull.

Yeah, from looking at the bugzilla it seemed like dm was releasing the
dev_t before the queue has been freed.

I don't know this code to well, so this isn't a full review, but it looks like
the right fix to me.